Caption: Vasotec, (Enalapril maleate), 5 mg pills, high blood pressure, (hypertension), medication, each dose with a full glass of water. May lead to very low blood pressure, (hypotension), electrolyte disorders, or kidney failure. Teratogenic, may cause birth defects if taken during pregnancy. Get emergency medical help if you have any of these signs of an allergic reaction: hives; severe stomach pain; difficulty breathing; swelling of your face, lips, tongue, or throat. Serious side effects: feeling light-headed, fainting, urinating more or less than usual or not at all, fever, chills, body aches, flu symptoms, pale skin, easy bruising or bleeding, fast, pounding, or uneven heartbeats, chest pain, swelling, rapid weight gain.